He who knows only his own side of the case knows little of that. His reasons may be good, and no one may have been able to refute them.
But if he is equally unable to refute the reasons on the opposite side, if he does not so much as know what they are, he has no ground for preferring either opinion …
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He must be able to hear them from persons who actually believe them … he must know them in their most plausible and persuasive form.John Stuart Mill

"To reach beyond fear and danger we must sharpen and widen our vision. We have to pierce through the deceptions that lull us into a comfortable complacency, to take a straight look down into the depths of our existence, without turning away uneasily or running after distractions." -- Bhikkhu Bodhi

"No man ever steps in the same river twice, for it's not the same river and he's not the same man." -- Heraclitus